Multi-step reaction with 11 steps
1: trimethylsilyl trifluoromethanesulfonate / dichloromethane / 144 h / 20 °C / Cooling with ice
2: trimethylsilyl trifluoromethanesulfonate / dichloromethane / 144 h / 20 °C / Inert atmosphere
3: methanol; sodium / 1.5 h / Inert atmosphere
4: camphorsulfonic acid / acetonitrile / 16 h
5: sodium hydride / N,N-dimethyl-formamide; mineral oil / 5.5 h / Inert atmosphere
6: borane-THF; di-n-butylboryl trifluoromethanesulfonate / dichloromethane; tetrahydrofuran / 0 °C
7: dmap; pyridine / dichloromethane / 2 h / 0 - 20 °C
8: N-Bromosuccinimide / acetone / 0 °C
9: 1,8-diazabicyclo[5.4.0]undec-7-ene / dichloromethane / 3 h / Inert atmosphere
10: trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / -25 °C / Molecular sieve; Inert atmosphere
11: 2,3-dicyano-5,6-dichloro-p-benzoquinone; water / dichloromethane / 2.5 h
With
pyridine; methanol; dmap; N-Bromosuccinimide; borane-THF; trimethylsilyl trifluoromethanesulfonate; di-n-butylboryl trifluoromethanesulfonate; camphorsulfonic acid; water; sodium; sodium hydride; 1,8-diazabicyclo[5.4.0]undec-7-ene; 2,3-dicyano-5,6-dichloro-p-benzoquinone;
In
tetrahydrofuran; dichloromethane; N,N-dimethyl-formamide; acetone; acetonitrile; mineral oil;
DOI:10.1021/jo300722y